Vertebrate Zoology

A Dictionary of Earth Sciences A Dictionary of Zoology A Dictionary of Earth Sciences Further reading

Acanthodii

A Dictionary of Earth Sciences | 1999 | | Copyright

Acanthodii (acanthodians) Class of primitive, fossil fish, characterized by the presence of a true bony skeleton (see BONE), a heterocercal tail fin, a persistent notochord, ganoid scales, and stout spines in front of the fins. The acanthodians lived from the Silurian to the Permian Period and may be related to ancestors of the more modern bony fish.

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AILSA ALLABY and MICHAEL ALLABY. "Acanthodii." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "Acanthodii." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O13-Acanthodii.html

AILSA ALLABY and MICHAEL ALLABY. "Acanthodii." A Dictionary of Earth Sciences. 1999. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-Acanthodii.html

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Acanthodii

A Dictionary of Zoology | 1999 | | Copyright

Acanthodii Class of primitive, fossil fish that had a true bony skeleton, a heterocercal tail fin, a persistent notochord, ganoid scales, and stout spines in front of the fins. The acanthodians lived from the Silurian Period to the Permian Period and may be related to ancestors of the more modern bony fish.

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MICHAEL ALLABY. "Acanthodii." A Dictionary of Zoology. 1999. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "Acanthodii." A Dictionary of Zoology. 1999. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O8-Acanthodii.html

MICHAEL ALLABY. "Acanthodii." A Dictionary of Zoology. 1999. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-Acanthodii.html

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acanthodians

A Dictionary of Earth Sciences | 1999 | | Copyright

acanthodians See ACANTHODII.

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Pick a style below, and copy the text for your bibliography.

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AILSA ALLABY and MICHAEL ALLABY. "acanthodians." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "acanthodians." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O13-acanthodians.html

AILSA ALLABY and MICHAEL ALLABY. "acanthodians." A Dictionary of Earth Sciences. 1999. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-acanthodians.html

Learn more about citation styles

Free newspaper and magazine articles

	Fossil-hunters uncover an ancient fish called Asbo; 200m-year-old discovery... Newspaper article from: Daily Post (Liverpool, England); 8/15/2007
	The living fossil: this fish "walked" the waters of the Indian Ocean... Magazine article from: ROM Magazine; 3/22/2011
	City pair find Jurassic era fossil fish.(News) Newspaper article from: Liverpool Echo (Liverpool, England); 8/15/2007